Grape plant named &#39;Arrathirteen&#39;

ABSTRACT

A new distinct variety of grapevine named ‘ARRATHIRTEEN’ abundantly forms attractive large seedless berries having a fire red skin coloration in medium-to-large clusters. The fruit displays a sweet crisp flavor and is firm in texture. The fruit commonly is ready for harvesting during the end of June in San Joaquin Valley of Central California, U.S.A., and displays good eating qualities as a table grape. The fruit firmness renders the fruit well amenable for handling, shipping, and storage.

CLASSIFICATION

The present invention relates to a new Vitis vinifera Grapevine.

VARIETY DENOMINATION

The new Grapevine has the varietal denomination ‘ARRATHIRTEEN’.

BACKGROUND OF THE INVENTION

A breeding program was initiated during the late 90's near Bakersfieldin San Joaquin Valley of Central California. In 2001, during thisbreeding program, a new variety of Vitis vinifera was created bydeliberate cross breeding of two parent plants by emasculation of thepollen bearing organ of the male and introducing pollen from anothermale origin. The female parent of the new variety was the GAR4 which isan oval shaped, dark red grape variety bearing a large seed rudiment(non-patented in the United States). The male parent (i.e. the pollenparent) of the new variety was GZR1 which is a round, pinkish grapevariety (non-patented in the United States).

Comparison between ARRATHIRTEEN and FLAME

ARRATHIRTEEN FLAME Vigor Weak Vigorous Berry color Red Grayish red Berryshape Obovoid Globose Seed trace Rudimentary None Flavor None Naturallysweet

The parentage of the new variety can be summarized as follows:

GAR4×GZR1

An artificial pollination was created, and the result was an embryowhich possessed unique genetic qualities. The rudiments resulting fromthe above pollination were embryo rescued.

In 2002 the plant was then transplanted to Bakersfield in San JoaquinValley of Central California.

It was found that the new grapevine of the present invention possessesthe following combination of characteristics:

(a) Forms attractive large seedless berries having fire red skincoloration in medium-to-large clusters which display a natural and ahigh sugar content,

(b) Commonly bears fruit during the end of June in the San JoaquinValley of Central California, U.S.A., and

(c) Bears fruit that is firm and is well amenable for storage, handling,and shipping.

The new variety during observation to date has displayed no visibledisease, and has displayed an ability to well resist cold, drought,heat; but sensitive to direct exposure to sun and wind. The fruit of thenew variety has been found to display excellent handling and shippingqualities combined with desirable dessert eating qualities.

The new variety of the present invention has been found to undergoasexual propagation beginning in 2005 near Bakersfield in the SanJoaquin Valley of Central California, U.S.A. by grafting on mature‘Thompson Seedless’ rootstock (non-patented in the United States). Suchasexual propagation has been conducted thereafter in successive yearsthrough 2008, and has shown that the characteristics of the new varietyare strictly transmissible from one generation to another. Accordingly,the new variety undergoes asexual propagation in a true to type manner.The age of the plant in the drawing is five years old and the varietywas created in 1989.

SUMMARY OF INVENTION

The new variety ARRATHIRTEEN is a large, fire red seedless table grapewith large production, e.g., about 40 to 50 bunches per vine, and anaverage of about one to two bunches per shoot.

Asexual reproduction by micro propagation of the new variety asperformed near Bakersfield, Calif., U.S.A., at Arvin, Calif. Ranch 33which shows that the forgoing and other distinguishing characteristicscome true to form and are established and transmitted through succeedingpropagations. DR

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying photographic illustration shows typical specimens ofvegetative growth of five year old specimens of the new variety, incolor as nearly true as it is reasonably possible to make in a colorillustration of this character. Colors in the photograph may differ fromthe color values cited in the detailed botanical description below,which accurately describes the colors of the new Grapevine.

FIG. 1 shows leaves, stems and grapes of ‘ARRATHIRTEEN’.

DETAILED BOTANICAL DESCRIPTION

The chart used in the identification of colors is the R.H.S. ColourChart of The Royal Horticultural Society. The description is based onthe observation of plants growing on ‘Thompson Seedless’ rootstockoutdoors near San Joaquin Valley of Central California, U.S.A.

-   Vine:    -   -   Vigor.—Very weak vine with thin foliage when over-exposed to            sun.        -   Productive capacity.—25-30 tons per hectare.        -   Trunk.—Strong, developed for its age. Ranges from 2″-2⅜″.            Surface is roughly textured with a fibrous, shaggy exterior.            The coloring is greyed-orange (165-B).-   Time of bud burst:    -   -   Early.—Date of bud burst in specified location of culture is            Mar. 15, 2011 in Arvin, Calif.-   Young shoot:    -   -   Openness of tip.—half open.        -   Prostrate hairs on tip.—sparse.        -   Anthocyanin coloration of prostrate hairs on tip.—medium.        -   Erect hairs on tip.—sparse.-   Young leaf:    -   -   Color of upper side of blade.—yellow green; top (yellow            green 152-A); bottom (yellow green 152-B).        -   Prostrate hairs between main veins on lower side of            blade.—absent or very sparse.        -   Erect hairs on main veins on lower side of blade.—absent or            very sparse.-   Shoot:    -   -   Attitude (before tying).—horizontal.        -   Color of dorsal side of internodes.—yellow-green (144-B).        -   Color of ventral side of internodes.—yellow-green (173-A).        -   Color of dorsal side of nodes.—yellow-green (144-B).        -   Color of ventral side of nodes.—yellow-green (144-A).        -   Erect hairs on internodes.—absent or very sparse.        -   Length of tendrils.—medium, 2 tendrils 28 cm.-   Flower:    -   -   Sexual organs.—fully developed stamens and fully developed            gynoecium.-   Mature leaf:    -   -   Size of blade.—large (6.5×8 inches).        -   Shape of blade.—wedge shaped.        -   Blistering of upper side of blade.—absent or very weak.        -   Number of lobes.—five.        -   Depth of upper lateral sinuses.—deep.-   Lobed leaves:    -   -   Arrangement of lobes of upper lateral sinuses.—strongly            overlapped.        -   Arrangement of lobes of petiole sinus.—strongly overlapped.        -   Length of teeth.—medium.        -   Ratio length/width of teeth.—medium, 4 cm.        -   Shape of teeth.—mixture of both sides straight and both            sides convex.        -   Proportion of main veins on upper side of blade with            anthocyanin coloration.—medium.        -   Prostrate hairs between main veins on lower side of            blade.—absent or very sparse.        -   Erect hairs on main veins on lower side of blade.—absent or            very sparse, 4 cm.        -   Length of petiole equal compared to length of middle            vein.—moderately shorter.        -   Top side color.—yellow green (147-A).        -   Bottom side color.—yellow-green (146-B).        -   Texture.—rough.        -   Petiole.—14.5 cm.        -   Petiole color.—yellow-green (144-A).        -   Petiole strips color.—yellow-purple (184-C).-   Reproductive organs:    -   -   Color.—green (143-A).        -   Size.—2 mm.-   Time of beginning of ripening: Medium, July 9 Arvin, Calif. season.-   Bunch:    -   -   Size (peduncle excluded).—medium (6.5×6 inches).        -   Average Weight.—600 g.        -   Density.—lax, single berries, some pedicels visible.        -   Length of peduncle primary bunch.—long (2.5 inches).-   Berry:    -   -   Size.—large, 19.1 mm.        -   Weight.—16 g per berry.        -   Shape.—obovoid.        -   Color of skin (without bloom).—red (grayed purple 183-C).        -   Ease of detachment from pedicel.—moderately easy.        -   Thickness of skin.—thin.        -   Anthocyanin coloration of flesh.—medium.        -   Firmness and color of flesh.—moderately firm, yellow-green            (145-D).        -   Particular flavor.—none.        -   Formation of seeds.—rudimentary.        -   Berries per bunch.—80 berries.        -   Market use of observed plant.—fresh market.-   Woody shoot:    -   -   Main color.—orange brown (grayed orange 165-B).-   DNA profile: To further the characterize the new Arra variety DNA    was extracted from dried leaf samples and DNA profiles were obtained    in Spain, using base pairs for 14 standard microsatellite DNA    markers. The data is presented hereafter.

Microsatellite DNA Marker Allele Sizes in Base Pairs MSV01 134 134 MSV02226 232 MSV04 185 193 MSV06 254 256 MSV07 318 322 MSV08 258 268 MSV09251 257 MSV10 215 215 MSV12 269 269 MSV13 168 168 MSV14 162 180 MSV15295 299 MSV16 188 194 MSV17 153 153

-   The ARRATHIRTEEN variety has not been observed under all possible    environmental conditions to date. Accordingly, it is possible that    the phenotypic expression may vary somewhat with changes in light    intensity and duration, cultural practices, and other environmental    conditions.

1. A new and distinct variety of grapevine, botanically known as Vitisvinifera, identified as ‘ARRATHIRTEEN’, substantially as shown anddescribed herein.